The Asphalt Plant Hill

Today it looked like it was going to rain, so knew I wasn't going far.   I decided to see if I could ride all the way up the hill in the asphalt plant, which has a couple of sections of 20% grade.  I usually only ride part of the way and end up walking the rest.   Well I made it all the way to the top and I thought I might die, I probable won't ride it all the way to the top again anytime soon.